1 // SPDX-License-Identifier: GPL-2.0+
2
3 #include <linux/module.h>
4 #include <linux/if_bridge.h>
5 #include <linux/if_vlan.h>
6 #include <linux/iopoll.h>
7 #include <linux/ip.h>
8 #include <linux/of.h>
9 #include <linux/of_net.h>
10 #include <linux/phy/phy.h>
11 #include <linux/platform_device.h>
12 #include <linux/reset.h>
13 #include <net/addrconf.h>
14
15 #include "lan966x_main.h"
16
17 #define XTR_EOF_0 0x00000080U
18 #define XTR_EOF_1 0x01000080U
19 #define XTR_EOF_2 0x02000080U
20 #define XTR_EOF_3 0x03000080U
21 #define XTR_PRUNED 0x04000080U
22 #define XTR_ABORT 0x05000080U
23 #define XTR_ESCAPE 0x06000080U
24 #define XTR_NOT_READY 0x07000080U
25 #define XTR_VALID_BYTES(x) (4 - (((x) >> 24) & 3))
26
27 #define IO_RANGES 2
28
29 static const struct of_device_id lan966x_match[] = {
30 { .compatible = "microchip,lan966x-switch" },
31 { }
32 };
33 MODULE_DEVICE_TABLE(of, lan966x_match);
34
35 struct lan966x_main_io_resource {
36 enum lan966x_target id;
37 phys_addr_t offset;
38 int range;
39 };
40
41 static const struct lan966x_main_io_resource lan966x_main_iomap[] = {
42 { TARGET_CPU, 0xc0000, 0 }, /* 0xe00c0000 */
43 { TARGET_FDMA, 0xc0400, 0 }, /* 0xe00c0400 */
44 { TARGET_ORG, 0, 1 }, /* 0xe2000000 */
45 { TARGET_GCB, 0x4000, 1 }, /* 0xe2004000 */
46 { TARGET_QS, 0x8000, 1 }, /* 0xe2008000 */
47 { TARGET_PTP, 0xc000, 1 }, /* 0xe200c000 */
48 { TARGET_CHIP_TOP, 0x10000, 1 }, /* 0xe2010000 */
49 { TARGET_REW, 0x14000, 1 }, /* 0xe2014000 */
50 { TARGET_VCAP, 0x18000, 1 }, /* 0xe2018000 */
51 { TARGET_VCAP + 1, 0x20000, 1 }, /* 0xe2020000 */
52 { TARGET_VCAP + 2, 0x24000, 1 }, /* 0xe2024000 */
53 { TARGET_SYS, 0x28000, 1 }, /* 0xe2028000 */
54 { TARGET_DEV, 0x34000, 1 }, /* 0xe2034000 */
55 { TARGET_DEV + 1, 0x38000, 1 }, /* 0xe2038000 */
56 { TARGET_DEV + 2, 0x3c000, 1 }, /* 0xe203c000 */
57 { TARGET_DEV + 3, 0x40000, 1 }, /* 0xe2040000 */
58 { TARGET_DEV + 4, 0x44000, 1 }, /* 0xe2044000 */
59 { TARGET_DEV + 5, 0x48000, 1 }, /* 0xe2048000 */
60 { TARGET_DEV + 6, 0x4c000, 1 }, /* 0xe204c000 */
61 { TARGET_DEV + 7, 0x50000, 1 }, /* 0xe2050000 */
62 { TARGET_QSYS, 0x100000, 1 }, /* 0xe2100000 */
63 { TARGET_AFI, 0x120000, 1 }, /* 0xe2120000 */
64 { TARGET_ANA, 0x140000, 1 }, /* 0xe2140000 */
65 };
66
lan966x_create_targets(struct platform_device * pdev,struct lan966x * lan966x)67 static int lan966x_create_targets(struct platform_device *pdev,
68 struct lan966x *lan966x)
69 {
70 struct resource *iores[IO_RANGES];
71 void __iomem *begin[IO_RANGES];
72 int idx;
73
74 /* Initially map the entire range and after that update each target to
75 * point inside the region at the correct offset. It is possible that
76 * other devices access the same region so don't add any checks about
77 * this.
78 */
79 for (idx = 0; idx < IO_RANGES; idx++) {
80 iores[idx] = platform_get_resource(pdev, IORESOURCE_MEM,
81 idx);
82 if (!iores[idx]) {
83 dev_err(&pdev->dev, "Invalid resource\n");
84 return -EINVAL;
85 }
86
87 begin[idx] = devm_ioremap(&pdev->dev,
88 iores[idx]->start,
89 resource_size(iores[idx]));
90 if (!begin[idx]) {
91 dev_err(&pdev->dev, "Unable to get registers: %s\n",
92 iores[idx]->name);
93 return -ENOMEM;
94 }
95 }
96
97 for (idx = 0; idx < ARRAY_SIZE(lan966x_main_iomap); idx++) {
98 const struct lan966x_main_io_resource *iomap =
99 &lan966x_main_iomap[idx];
100
101 lan966x->regs[iomap->id] = begin[iomap->range] + iomap->offset;
102 }
103
104 return 0;
105 }
106
lan966x_port_unique_address(struct net_device * dev)107 static bool lan966x_port_unique_address(struct net_device *dev)
108 {
109 struct lan966x_port *port = netdev_priv(dev);
110 struct lan966x *lan966x = port->lan966x;
111 int p;
112
113 for (p = 0; p < lan966x->num_phys_ports; ++p) {
114 port = lan966x->ports[p];
115 if (!port || port->dev == dev)
116 continue;
117
118 if (ether_addr_equal(dev->dev_addr, port->dev->dev_addr))
119 return false;
120 }
121
122 return true;
123 }
124
lan966x_port_set_mac_address(struct net_device * dev,void * p)125 static int lan966x_port_set_mac_address(struct net_device *dev, void *p)
126 {
127 struct lan966x_port *port = netdev_priv(dev);
128 struct lan966x *lan966x = port->lan966x;
129 const struct sockaddr *addr = p;
130 int ret;
131
132 if (ether_addr_equal(addr->sa_data, dev->dev_addr))
133 return 0;
134
135 /* Learn the new net device MAC address in the mac table. */
136 ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, HOST_PVID);
137 if (ret)
138 return ret;
139
140 /* If there is another port with the same address as the dev, then don't
141 * delete it from the MAC table
142 */
143 if (!lan966x_port_unique_address(dev))
144 goto out;
145
146 /* Then forget the previous one. */
147 ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, HOST_PVID);
148 if (ret)
149 return ret;
150
151 out:
152 eth_hw_addr_set(dev, addr->sa_data);
153 return ret;
154 }
155
lan966x_port_get_phys_port_name(struct net_device * dev,char * buf,size_t len)156 static int lan966x_port_get_phys_port_name(struct net_device *dev,
157 char *buf, size_t len)
158 {
159 struct lan966x_port *port = netdev_priv(dev);
160 int ret;
161
162 ret = snprintf(buf, len, "p%d", port->chip_port);
163 if (ret >= len)
164 return -EINVAL;
165
166 return 0;
167 }
168
lan966x_port_open(struct net_device * dev)169 static int lan966x_port_open(struct net_device *dev)
170 {
171 struct lan966x_port *port = netdev_priv(dev);
172 struct lan966x *lan966x = port->lan966x;
173 int err;
174
175 /* Enable receiving frames on the port, and activate auto-learning of
176 * MAC addresses.
177 */
178 lan_rmw(ANA_PORT_CFG_LEARNAUTO_SET(1) |
179 ANA_PORT_CFG_RECV_ENA_SET(1) |
180 ANA_PORT_CFG_PORTID_VAL_SET(port->chip_port),
181 ANA_PORT_CFG_LEARNAUTO |
182 ANA_PORT_CFG_RECV_ENA |
183 ANA_PORT_CFG_PORTID_VAL,
184 lan966x, ANA_PORT_CFG(port->chip_port));
185
186 err = phylink_fwnode_phy_connect(port->phylink, port->fwnode, 0);
187 if (err) {
188 netdev_err(dev, "Could not attach to PHY\n");
189 return err;
190 }
191
192 phylink_start(port->phylink);
193
194 return 0;
195 }
196
lan966x_port_stop(struct net_device * dev)197 static int lan966x_port_stop(struct net_device *dev)
198 {
199 struct lan966x_port *port = netdev_priv(dev);
200
201 lan966x_port_config_down(port);
202 phylink_stop(port->phylink);
203 phylink_disconnect_phy(port->phylink);
204
205 return 0;
206 }
207
lan966x_port_inj_status(struct lan966x * lan966x)208 static int lan966x_port_inj_status(struct lan966x *lan966x)
209 {
210 return lan_rd(lan966x, QS_INJ_STATUS);
211 }
212
lan966x_port_inj_ready(struct lan966x * lan966x,u8 grp)213 static int lan966x_port_inj_ready(struct lan966x *lan966x, u8 grp)
214 {
215 u32 val;
216
217 if (lan_rd(lan966x, QS_INJ_STATUS) & QS_INJ_STATUS_FIFO_RDY_SET(BIT(grp)))
218 return 0;
219
220 return readx_poll_timeout_atomic(lan966x_port_inj_status, lan966x, val,
221 QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp),
222 READL_SLEEP_US, READL_TIMEOUT_US);
223 }
224
lan966x_port_ifh_xmit(struct sk_buff * skb,__be32 * ifh,struct net_device * dev)225 static int lan966x_port_ifh_xmit(struct sk_buff *skb,
226 __be32 *ifh,
227 struct net_device *dev)
228 {
229 struct lan966x_port *port = netdev_priv(dev);
230 struct lan966x *lan966x = port->lan966x;
231 u32 i, count, last;
232 u8 grp = 0;
233 u32 val;
234 int err;
235
236 val = lan_rd(lan966x, QS_INJ_STATUS);
237 if (!(QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp)) ||
238 (QS_INJ_STATUS_WMARK_REACHED_GET(val) & BIT(grp)))
239 goto err;
240
241 /* Write start of frame */
242 lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) |
243 QS_INJ_CTRL_SOF_SET(1),
244 lan966x, QS_INJ_CTRL(grp));
245
246 /* Write IFH header */
247 for (i = 0; i < IFH_LEN; ++i) {
248 /* Wait until the fifo is ready */
249 err = lan966x_port_inj_ready(lan966x, grp);
250 if (err)
251 goto err;
252
253 lan_wr((__force u32)ifh[i], lan966x, QS_INJ_WR(grp));
254 }
255
256 /* Write frame */
257 count = DIV_ROUND_UP(skb->len, 4);
258 last = skb->len % 4;
259 for (i = 0; i < count; ++i) {
260 /* Wait until the fifo is ready */
261 err = lan966x_port_inj_ready(lan966x, grp);
262 if (err)
263 goto err;
264
265 lan_wr(((u32 *)skb->data)[i], lan966x, QS_INJ_WR(grp));
266 }
267
268 /* Add padding */
269 while (i < (LAN966X_BUFFER_MIN_SZ / 4)) {
270 /* Wait until the fifo is ready */
271 err = lan966x_port_inj_ready(lan966x, grp);
272 if (err)
273 goto err;
274
275 lan_wr(0, lan966x, QS_INJ_WR(grp));
276 ++i;
277 }
278
279 /* Inidcate EOF and valid bytes in the last word */
280 lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) |
281 QS_INJ_CTRL_VLD_BYTES_SET(skb->len < LAN966X_BUFFER_MIN_SZ ?
282 0 : last) |
283 QS_INJ_CTRL_EOF_SET(1),
284 lan966x, QS_INJ_CTRL(grp));
285
286 /* Add dummy CRC */
287 lan_wr(0, lan966x, QS_INJ_WR(grp));
288 skb_tx_timestamp(skb);
289
290 dev->stats.tx_packets++;
291 dev->stats.tx_bytes += skb->len;
292
293 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
294 LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP)
295 return NETDEV_TX_OK;
296
297 dev_consume_skb_any(skb);
298 return NETDEV_TX_OK;
299
300 err:
301 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
302 LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP)
303 lan966x_ptp_txtstamp_release(port, skb);
304
305 return NETDEV_TX_BUSY;
306 }
307
lan966x_ifh_set(u8 * ifh,size_t val,size_t pos,size_t length)308 static void lan966x_ifh_set(u8 *ifh, size_t val, size_t pos, size_t length)
309 {
310 int i = 0;
311
312 do {
313 u8 p = IFH_LEN_BYTES - (pos + i) / 8 - 1;
314 u8 v = val >> i & 0xff;
315
316 /* There is no need to check for limits of the array, as these
317 * will never be written
318 */
319 ifh[p] |= v << ((pos + i) % 8);
320 ifh[p - 1] |= v >> (8 - (pos + i) % 8);
321
322 i += 8;
323 } while (i < length);
324 }
325
lan966x_ifh_set_bypass(void * ifh,u64 bypass)326 void lan966x_ifh_set_bypass(void *ifh, u64 bypass)
327 {
328 lan966x_ifh_set(ifh, bypass, IFH_POS_BYPASS, IFH_WID_BYPASS);
329 }
330
lan966x_ifh_set_port(void * ifh,u64 port)331 void lan966x_ifh_set_port(void *ifh, u64 port)
332 {
333 lan966x_ifh_set(ifh, port, IFH_POS_DSTS, IFH_WID_DSTS);
334 }
335
lan966x_ifh_set_qos_class(void * ifh,u64 qos)336 static void lan966x_ifh_set_qos_class(void *ifh, u64 qos)
337 {
338 lan966x_ifh_set(ifh, qos, IFH_POS_QOS_CLASS, IFH_WID_QOS_CLASS);
339 }
340
lan966x_ifh_set_ipv(void * ifh,u64 ipv)341 static void lan966x_ifh_set_ipv(void *ifh, u64 ipv)
342 {
343 lan966x_ifh_set(ifh, ipv, IFH_POS_IPV, IFH_WID_IPV);
344 }
345
lan966x_ifh_set_vid(void * ifh,u64 vid)346 static void lan966x_ifh_set_vid(void *ifh, u64 vid)
347 {
348 lan966x_ifh_set(ifh, vid, IFH_POS_TCI, IFH_WID_TCI);
349 }
350
lan966x_ifh_set_rew_op(void * ifh,u64 rew_op)351 static void lan966x_ifh_set_rew_op(void *ifh, u64 rew_op)
352 {
353 lan966x_ifh_set(ifh, rew_op, IFH_POS_REW_CMD, IFH_WID_REW_CMD);
354 }
355
lan966x_ifh_set_timestamp(void * ifh,u64 timestamp)356 static void lan966x_ifh_set_timestamp(void *ifh, u64 timestamp)
357 {
358 lan966x_ifh_set(ifh, timestamp, IFH_POS_TIMESTAMP, IFH_WID_TIMESTAMP);
359 }
360
lan966x_port_xmit(struct sk_buff * skb,struct net_device * dev)361 static netdev_tx_t lan966x_port_xmit(struct sk_buff *skb,
362 struct net_device *dev)
363 {
364 struct lan966x_port *port = netdev_priv(dev);
365 struct lan966x *lan966x = port->lan966x;
366 __be32 ifh[IFH_LEN];
367 int err;
368
369 memset(ifh, 0x0, sizeof(__be32) * IFH_LEN);
370
371 lan966x_ifh_set_bypass(ifh, 1);
372 lan966x_ifh_set_port(ifh, BIT_ULL(port->chip_port));
373 lan966x_ifh_set_qos_class(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
374 lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
375 lan966x_ifh_set_vid(ifh, skb_vlan_tag_get(skb));
376
377 if (port->lan966x->ptp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
378 err = lan966x_ptp_txtstamp_request(port, skb);
379 if (err)
380 return err;
381
382 lan966x_ifh_set_rew_op(ifh, LAN966X_SKB_CB(skb)->rew_op);
383 lan966x_ifh_set_timestamp(ifh, LAN966X_SKB_CB(skb)->ts_id);
384 }
385
386 spin_lock(&lan966x->tx_lock);
387 if (port->lan966x->fdma)
388 err = lan966x_fdma_xmit(skb, ifh, dev);
389 else
390 err = lan966x_port_ifh_xmit(skb, ifh, dev);
391 spin_unlock(&lan966x->tx_lock);
392
393 return err;
394 }
395
lan966x_port_change_mtu(struct net_device * dev,int new_mtu)396 static int lan966x_port_change_mtu(struct net_device *dev, int new_mtu)
397 {
398 struct lan966x_port *port = netdev_priv(dev);
399 struct lan966x *lan966x = port->lan966x;
400 int old_mtu = dev->mtu;
401 int err;
402
403 lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(new_mtu)),
404 lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port));
405 dev->mtu = new_mtu;
406
407 if (!lan966x->fdma)
408 return 0;
409
410 err = lan966x_fdma_change_mtu(lan966x);
411 if (err) {
412 lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(old_mtu)),
413 lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port));
414 dev->mtu = old_mtu;
415 }
416
417 return err;
418 }
419
lan966x_mc_unsync(struct net_device * dev,const unsigned char * addr)420 static int lan966x_mc_unsync(struct net_device *dev, const unsigned char *addr)
421 {
422 struct lan966x_port *port = netdev_priv(dev);
423 struct lan966x *lan966x = port->lan966x;
424
425 return lan966x_mac_forget(lan966x, addr, HOST_PVID, ENTRYTYPE_LOCKED);
426 }
427
lan966x_mc_sync(struct net_device * dev,const unsigned char * addr)428 static int lan966x_mc_sync(struct net_device *dev, const unsigned char *addr)
429 {
430 struct lan966x_port *port = netdev_priv(dev);
431 struct lan966x *lan966x = port->lan966x;
432
433 return lan966x_mac_cpu_learn(lan966x, addr, HOST_PVID);
434 }
435
lan966x_port_set_rx_mode(struct net_device * dev)436 static void lan966x_port_set_rx_mode(struct net_device *dev)
437 {
438 __dev_mc_sync(dev, lan966x_mc_sync, lan966x_mc_unsync);
439 }
440
lan966x_port_get_parent_id(struct net_device * dev,struct netdev_phys_item_id * ppid)441 static int lan966x_port_get_parent_id(struct net_device *dev,
442 struct netdev_phys_item_id *ppid)
443 {
444 struct lan966x_port *port = netdev_priv(dev);
445 struct lan966x *lan966x = port->lan966x;
446
447 ppid->id_len = sizeof(lan966x->base_mac);
448 memcpy(&ppid->id, &lan966x->base_mac, ppid->id_len);
449
450 return 0;
451 }
452
lan966x_port_hwtstamp_get(struct net_device * dev,struct kernel_hwtstamp_config * cfg)453 static int lan966x_port_hwtstamp_get(struct net_device *dev,
454 struct kernel_hwtstamp_config *cfg)
455 {
456 struct lan966x_port *port = netdev_priv(dev);
457
458 if (!port->lan966x->ptp)
459 return -EOPNOTSUPP;
460
461 lan966x_ptp_hwtstamp_get(port, cfg);
462
463 return 0;
464 }
465
lan966x_port_hwtstamp_set(struct net_device * dev,struct kernel_hwtstamp_config * cfg,struct netlink_ext_ack * extack)466 static int lan966x_port_hwtstamp_set(struct net_device *dev,
467 struct kernel_hwtstamp_config *cfg,
468 struct netlink_ext_ack *extack)
469 {
470 struct lan966x_port *port = netdev_priv(dev);
471 int err;
472
473 if (cfg->source != HWTSTAMP_SOURCE_NETDEV &&
474 cfg->source != HWTSTAMP_SOURCE_PHYLIB)
475 return -EOPNOTSUPP;
476
477 if (cfg->source == HWTSTAMP_SOURCE_NETDEV && !port->lan966x->ptp)
478 return -EOPNOTSUPP;
479
480 err = lan966x_ptp_setup_traps(port, cfg);
481 if (err)
482 return err;
483
484 if (cfg->source == HWTSTAMP_SOURCE_NETDEV) {
485 err = lan966x_ptp_hwtstamp_set(port, cfg, extack);
486 if (err) {
487 lan966x_ptp_del_traps(port);
488 return err;
489 }
490 }
491
492 return 0;
493 }
494
495 static const struct net_device_ops lan966x_port_netdev_ops = {
496 .ndo_open = lan966x_port_open,
497 .ndo_stop = lan966x_port_stop,
498 .ndo_start_xmit = lan966x_port_xmit,
499 .ndo_change_mtu = lan966x_port_change_mtu,
500 .ndo_set_rx_mode = lan966x_port_set_rx_mode,
501 .ndo_get_phys_port_name = lan966x_port_get_phys_port_name,
502 .ndo_get_stats64 = lan966x_stats_get,
503 .ndo_set_mac_address = lan966x_port_set_mac_address,
504 .ndo_get_port_parent_id = lan966x_port_get_parent_id,
505 .ndo_eth_ioctl = phy_do_ioctl,
506 .ndo_setup_tc = lan966x_tc_setup,
507 .ndo_bpf = lan966x_xdp,
508 .ndo_xdp_xmit = lan966x_xdp_xmit,
509 .ndo_hwtstamp_get = lan966x_port_hwtstamp_get,
510 .ndo_hwtstamp_set = lan966x_port_hwtstamp_set,
511 };
512
lan966x_netdevice_check(const struct net_device * dev)513 bool lan966x_netdevice_check(const struct net_device *dev)
514 {
515 return dev->netdev_ops == &lan966x_port_netdev_ops;
516 }
517
lan966x_hw_offload(struct lan966x * lan966x,u32 port,struct sk_buff * skb)518 bool lan966x_hw_offload(struct lan966x *lan966x, u32 port, struct sk_buff *skb)
519 {
520 u32 val;
521
522 /* The IGMP and MLD frames are not forward by the HW if
523 * multicast snooping is enabled, therefor don't mark as
524 * offload to allow the SW to forward the frames accordingly.
525 */
526 val = lan_rd(lan966x, ANA_CPU_FWD_CFG(port));
527 if (!(val & (ANA_CPU_FWD_CFG_IGMP_REDIR_ENA |
528 ANA_CPU_FWD_CFG_MLD_REDIR_ENA)))
529 return true;
530
531 if (eth_type_vlan(skb->protocol)) {
532 skb = skb_vlan_untag(skb);
533 if (unlikely(!skb))
534 return false;
535 }
536
537 if (skb->protocol == htons(ETH_P_IP) &&
538 ip_hdr(skb)->protocol == IPPROTO_IGMP)
539 return false;
540
541 if (IS_ENABLED(CONFIG_IPV6) &&
542 skb->protocol == htons(ETH_P_IPV6) &&
543 ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) &&
544 !ipv6_mc_check_mld(skb))
545 return false;
546
547 return true;
548 }
549
lan966x_port_xtr_status(struct lan966x * lan966x,u8 grp)550 static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp)
551 {
552 return lan_rd(lan966x, QS_XTR_RD(grp));
553 }
554
lan966x_port_xtr_ready(struct lan966x * lan966x,u8 grp)555 static int lan966x_port_xtr_ready(struct lan966x *lan966x, u8 grp)
556 {
557 u32 val;
558
559 return read_poll_timeout(lan966x_port_xtr_status, val,
560 val != XTR_NOT_READY,
561 READL_SLEEP_US, READL_TIMEOUT_US, false,
562 lan966x, grp);
563 }
564
lan966x_rx_frame_word(struct lan966x * lan966x,u8 grp,u32 * rval)565 static int lan966x_rx_frame_word(struct lan966x *lan966x, u8 grp, u32 *rval)
566 {
567 u32 bytes_valid;
568 u32 val;
569 int err;
570
571 val = lan_rd(lan966x, QS_XTR_RD(grp));
572 if (val == XTR_NOT_READY) {
573 err = lan966x_port_xtr_ready(lan966x, grp);
574 if (err)
575 return -EIO;
576 }
577
578 switch (val) {
579 case XTR_ABORT:
580 return -EIO;
581 case XTR_EOF_0:
582 case XTR_EOF_1:
583 case XTR_EOF_2:
584 case XTR_EOF_3:
585 case XTR_PRUNED:
586 bytes_valid = XTR_VALID_BYTES(val);
587 val = lan_rd(lan966x, QS_XTR_RD(grp));
588 if (val == XTR_ESCAPE)
589 *rval = lan_rd(lan966x, QS_XTR_RD(grp));
590 else
591 *rval = val;
592
593 return bytes_valid;
594 case XTR_ESCAPE:
595 *rval = lan_rd(lan966x, QS_XTR_RD(grp));
596
597 return 4;
598 default:
599 *rval = val;
600
601 return 4;
602 }
603 }
604
lan966x_ifh_get(u8 * ifh,size_t pos,size_t length)605 static u64 lan966x_ifh_get(u8 *ifh, size_t pos, size_t length)
606 {
607 u64 val = 0;
608 u8 v;
609
610 for (int i = 0; i < length ; i++) {
611 int j = pos + i;
612 int k = j % 8;
613
614 if (i == 0 || k == 0)
615 v = ifh[IFH_LEN_BYTES - (j / 8) - 1];
616
617 if (v & (1 << k))
618 val |= (1ULL << i);
619 }
620
621 return val;
622 }
623
lan966x_ifh_get_src_port(void * ifh,u64 * src_port)624 void lan966x_ifh_get_src_port(void *ifh, u64 *src_port)
625 {
626 *src_port = lan966x_ifh_get(ifh, IFH_POS_SRCPORT, IFH_WID_SRCPORT);
627 }
628
lan966x_ifh_get_len(void * ifh,u64 * len)629 static void lan966x_ifh_get_len(void *ifh, u64 *len)
630 {
631 *len = lan966x_ifh_get(ifh, IFH_POS_LEN, IFH_WID_LEN);
632 }
633
lan966x_ifh_get_timestamp(void * ifh,u64 * timestamp)634 void lan966x_ifh_get_timestamp(void *ifh, u64 *timestamp)
635 {
636 *timestamp = lan966x_ifh_get(ifh, IFH_POS_TIMESTAMP, IFH_WID_TIMESTAMP);
637 }
638
lan966x_xtr_irq_handler(int irq,void * args)639 static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
640 {
641 struct lan966x *lan966x = args;
642 int i, grp = 0, err = 0;
643
644 if (!(lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp)))
645 return IRQ_NONE;
646
647 do {
648 u64 src_port, len, timestamp;
649 struct net_device *dev;
650 struct sk_buff *skb;
651 int sz = 0, buf_len;
652 u32 ifh[IFH_LEN];
653 u32 *buf;
654 u32 val;
655
656 for (i = 0; i < IFH_LEN; i++) {
657 err = lan966x_rx_frame_word(lan966x, grp, &ifh[i]);
658 if (err != 4)
659 goto recover;
660 }
661
662 err = 0;
663
664 lan966x_ifh_get_src_port(ifh, &src_port);
665 lan966x_ifh_get_len(ifh, &len);
666 lan966x_ifh_get_timestamp(ifh, ×tamp);
667
668 WARN_ON(src_port >= lan966x->num_phys_ports);
669
670 dev = lan966x->ports[src_port]->dev;
671 skb = netdev_alloc_skb(dev, len);
672 if (unlikely(!skb)) {
673 netdev_err(dev, "Unable to allocate sk_buff\n");
674 err = -ENOMEM;
675 break;
676 }
677 buf_len = len - ETH_FCS_LEN;
678 buf = (u32 *)skb_put(skb, buf_len);
679
680 len = 0;
681 do {
682 sz = lan966x_rx_frame_word(lan966x, grp, &val);
683 if (sz < 0) {
684 kfree_skb(skb);
685 goto recover;
686 }
687
688 *buf++ = val;
689 len += sz;
690 } while (len < buf_len);
691
692 /* Read the FCS */
693 sz = lan966x_rx_frame_word(lan966x, grp, &val);
694 if (sz < 0) {
695 kfree_skb(skb);
696 goto recover;
697 }
698
699 /* Update the statistics if part of the FCS was read before */
700 len -= ETH_FCS_LEN - sz;
701
702 if (unlikely(dev->features & NETIF_F_RXFCS)) {
703 buf = (u32 *)skb_put(skb, ETH_FCS_LEN);
704 *buf = val;
705 }
706
707 lan966x_ptp_rxtstamp(lan966x, skb, src_port, timestamp);
708 skb->protocol = eth_type_trans(skb, dev);
709
710 if (lan966x->bridge_mask & BIT(src_port)) {
711 skb->offload_fwd_mark = 1;
712
713 skb_reset_network_header(skb);
714 if (!lan966x_hw_offload(lan966x, src_port, skb))
715 skb->offload_fwd_mark = 0;
716 }
717
718 if (!skb_defer_rx_timestamp(skb))
719 netif_rx(skb);
720
721 dev->stats.rx_bytes += len;
722 dev->stats.rx_packets++;
723
724 recover:
725 if (sz < 0 || err)
726 lan_rd(lan966x, QS_XTR_RD(grp));
727
728 } while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp));
729
730 return IRQ_HANDLED;
731 }
732
lan966x_ana_irq_handler(int irq,void * args)733 static irqreturn_t lan966x_ana_irq_handler(int irq, void *args)
734 {
735 struct lan966x *lan966x = args;
736
737 return lan966x_mac_irq_handler(lan966x);
738 }
739
lan966x_cleanup_ports(struct lan966x * lan966x)740 static void lan966x_cleanup_ports(struct lan966x *lan966x)
741 {
742 struct lan966x_port *port;
743 int p;
744
745 for (p = 0; p < lan966x->num_phys_ports; p++) {
746 port = lan966x->ports[p];
747 if (!port)
748 continue;
749
750 if (port->dev)
751 unregister_netdev(port->dev);
752
753 lan966x_xdp_port_deinit(port);
754 if (lan966x->fdma && lan966x->fdma_ndev == port->dev)
755 lan966x_fdma_netdev_deinit(lan966x, port->dev);
756
757 if (port->phylink) {
758 rtnl_lock();
759 lan966x_port_stop(port->dev);
760 rtnl_unlock();
761 phylink_destroy(port->phylink);
762 port->phylink = NULL;
763 }
764
765 if (port->fwnode)
766 fwnode_handle_put(port->fwnode);
767 }
768
769 disable_irq(lan966x->xtr_irq);
770 lan966x->xtr_irq = -ENXIO;
771
772 if (lan966x->ana_irq > 0) {
773 disable_irq(lan966x->ana_irq);
774 lan966x->ana_irq = -ENXIO;
775 }
776
777 if (lan966x->fdma)
778 devm_free_irq(lan966x->dev, lan966x->fdma_irq, lan966x);
779
780 if (lan966x->ptp_irq > 0)
781 devm_free_irq(lan966x->dev, lan966x->ptp_irq, lan966x);
782
783 if (lan966x->ptp_ext_irq > 0)
784 devm_free_irq(lan966x->dev, lan966x->ptp_ext_irq, lan966x);
785 }
786
lan966x_probe_port(struct lan966x * lan966x,u32 p,phy_interface_t phy_mode,struct fwnode_handle * portnp)787 static int lan966x_probe_port(struct lan966x *lan966x, u32 p,
788 phy_interface_t phy_mode,
789 struct fwnode_handle *portnp)
790 {
791 struct lan966x_port *port;
792 struct phylink *phylink;
793 struct net_device *dev;
794 int err;
795
796 if (p >= lan966x->num_phys_ports)
797 return -EINVAL;
798
799 dev = devm_alloc_etherdev_mqs(lan966x->dev,
800 sizeof(struct lan966x_port),
801 NUM_PRIO_QUEUES, 1);
802 if (!dev)
803 return -ENOMEM;
804
805 SET_NETDEV_DEV(dev, lan966x->dev);
806 port = netdev_priv(dev);
807 port->dev = dev;
808 port->lan966x = lan966x;
809 port->chip_port = p;
810 lan966x->ports[p] = port;
811
812 dev->max_mtu = ETH_MAX_MTU;
813
814 dev->netdev_ops = &lan966x_port_netdev_ops;
815 dev->ethtool_ops = &lan966x_ethtool_ops;
816 dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
817 NETIF_F_HW_VLAN_STAG_TX |
818 NETIF_F_HW_TC;
819 dev->hw_features |= NETIF_F_HW_TC;
820 dev->priv_flags |= IFF_SEE_ALL_HWTSTAMP_REQUESTS;
821 dev->needed_headroom = IFH_LEN_BYTES;
822
823 eth_hw_addr_gen(dev, lan966x->base_mac, p + 1);
824
825 lan966x_mac_learn(lan966x, PGID_CPU, dev->dev_addr, HOST_PVID,
826 ENTRYTYPE_LOCKED);
827
828 port->phylink_config.dev = &port->dev->dev;
829 port->phylink_config.type = PHYLINK_NETDEV;
830 port->phylink_pcs.poll = true;
831 port->phylink_pcs.ops = &lan966x_phylink_pcs_ops;
832 port->phylink_pcs.neg_mode = true;
833
834 port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
835 MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD;
836
837 phy_interface_set_rgmii(port->phylink_config.supported_interfaces);
838 __set_bit(PHY_INTERFACE_MODE_MII,
839 port->phylink_config.supported_interfaces);
840 __set_bit(PHY_INTERFACE_MODE_GMII,
841 port->phylink_config.supported_interfaces);
842 __set_bit(PHY_INTERFACE_MODE_SGMII,
843 port->phylink_config.supported_interfaces);
844 __set_bit(PHY_INTERFACE_MODE_QSGMII,
845 port->phylink_config.supported_interfaces);
846 __set_bit(PHY_INTERFACE_MODE_QUSGMII,
847 port->phylink_config.supported_interfaces);
848 __set_bit(PHY_INTERFACE_MODE_1000BASEX,
849 port->phylink_config.supported_interfaces);
850 __set_bit(PHY_INTERFACE_MODE_2500BASEX,
851 port->phylink_config.supported_interfaces);
852
853 phylink = phylink_create(&port->phylink_config,
854 portnp,
855 phy_mode,
856 &lan966x_phylink_mac_ops);
857 if (IS_ERR(phylink)) {
858 port->dev = NULL;
859 return PTR_ERR(phylink);
860 }
861
862 port->phylink = phylink;
863
864 if (lan966x->fdma)
865 dev->xdp_features = NETDEV_XDP_ACT_BASIC |
866 NETDEV_XDP_ACT_REDIRECT |
867 NETDEV_XDP_ACT_NDO_XMIT;
868
869 err = register_netdev(dev);
870 if (err) {
871 dev_err(lan966x->dev, "register_netdev failed\n");
872 return err;
873 }
874
875 lan966x_vlan_port_set_vlan_aware(port, 0);
876 lan966x_vlan_port_set_vid(port, HOST_PVID, false, false);
877 lan966x_vlan_port_apply(port);
878
879 return 0;
880 }
881
lan966x_init(struct lan966x * lan966x)882 static void lan966x_init(struct lan966x *lan966x)
883 {
884 u32 p, i;
885
886 /* MAC table initialization */
887 lan966x_mac_init(lan966x);
888
889 lan966x_vlan_init(lan966x);
890
891 /* Flush queues */
892 lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) |
893 GENMASK(1, 0),
894 lan966x, QS_XTR_FLUSH);
895
896 /* Allow to drain */
897 mdelay(1);
898
899 /* All Queues normal */
900 lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) &
901 ~(GENMASK(1, 0)),
902 lan966x, QS_XTR_FLUSH);
903
904 /* Set MAC age time to default value, the entry is aged after
905 * 2 * AGE_PERIOD
906 */
907 lan_wr(ANA_AUTOAGE_AGE_PERIOD_SET(BR_DEFAULT_AGEING_TIME / 2 / HZ),
908 lan966x, ANA_AUTOAGE);
909
910 /* Disable learning for frames discarded by VLAN ingress filtering */
911 lan_rmw(ANA_ADVLEARN_VLAN_CHK_SET(1),
912 ANA_ADVLEARN_VLAN_CHK,
913 lan966x, ANA_ADVLEARN);
914
915 /* Setup frame ageing - "2 sec" - The unit is 6.5 us on lan966x */
916 lan_wr(SYS_FRM_AGING_AGE_TX_ENA_SET(1) |
917 (20000000 / 65),
918 lan966x, SYS_FRM_AGING);
919
920 /* Map the 8 CPU extraction queues to CPU port */
921 lan_wr(0, lan966x, QSYS_CPU_GROUP_MAP);
922
923 /* Do byte-swap and expect status after last data word
924 * Extraction: Mode: manual extraction) | Byte_swap
925 */
926 lan_wr(QS_XTR_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) |
927 QS_XTR_GRP_CFG_BYTE_SWAP_SET(1),
928 lan966x, QS_XTR_GRP_CFG(0));
929
930 /* Injection: Mode: manual injection | Byte_swap */
931 lan_wr(QS_INJ_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) |
932 QS_INJ_GRP_CFG_BYTE_SWAP_SET(1),
933 lan966x, QS_INJ_GRP_CFG(0));
934
935 lan_rmw(QS_INJ_CTRL_GAP_SIZE_SET(0),
936 QS_INJ_CTRL_GAP_SIZE,
937 lan966x, QS_INJ_CTRL(0));
938
939 /* Enable IFH insertion/parsing on CPU ports */
940 lan_wr(SYS_PORT_MODE_INCL_INJ_HDR_SET(1) |
941 SYS_PORT_MODE_INCL_XTR_HDR_SET(1),
942 lan966x, SYS_PORT_MODE(CPU_PORT));
943
944 /* Setup flooding PGIDs */
945 lan_wr(ANA_FLOODING_IPMC_FLD_MC4_DATA_SET(PGID_MCIPV4) |
946 ANA_FLOODING_IPMC_FLD_MC4_CTRL_SET(PGID_MC) |
947 ANA_FLOODING_IPMC_FLD_MC6_DATA_SET(PGID_MCIPV6) |
948 ANA_FLOODING_IPMC_FLD_MC6_CTRL_SET(PGID_MC),
949 lan966x, ANA_FLOODING_IPMC);
950
951 /* There are 8 priorities */
952 for (i = 0; i < 8; ++i)
953 lan_rmw(ANA_FLOODING_FLD_MULTICAST_SET(PGID_MC) |
954 ANA_FLOODING_FLD_UNICAST_SET(PGID_UC) |
955 ANA_FLOODING_FLD_BROADCAST_SET(PGID_BC),
956 ANA_FLOODING_FLD_MULTICAST |
957 ANA_FLOODING_FLD_UNICAST |
958 ANA_FLOODING_FLD_BROADCAST,
959 lan966x, ANA_FLOODING(i));
960
961 for (i = 0; i < PGID_ENTRIES; ++i)
962 /* Set all the entries to obey VLAN_VLAN */
963 lan_rmw(ANA_PGID_CFG_OBEY_VLAN_SET(1),
964 ANA_PGID_CFG_OBEY_VLAN,
965 lan966x, ANA_PGID_CFG(i));
966
967 for (p = 0; p < lan966x->num_phys_ports; p++) {
968 /* Disable bridging by default */
969 lan_rmw(ANA_PGID_PGID_SET(0x0),
970 ANA_PGID_PGID,
971 lan966x, ANA_PGID(p + PGID_SRC));
972
973 /* Do not forward BPDU frames to the front ports and copy them
974 * to CPU
975 */
976 lan_wr(0xffff, lan966x, ANA_CPU_FWD_BPDU_CFG(p));
977 }
978
979 /* Set source buffer size for each priority and each port to 1500 bytes */
980 for (i = 0; i <= QSYS_Q_RSRV; ++i) {
981 lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(i));
982 lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(512 + i));
983 }
984
985 /* Enable switching to/from cpu port */
986 lan_wr(QSYS_SW_PORT_MODE_PORT_ENA_SET(1) |
987 QSYS_SW_PORT_MODE_SCH_NEXT_CFG_SET(1) |
988 QSYS_SW_PORT_MODE_INGRESS_DROP_MODE_SET(1),
989 lan966x, QSYS_SW_PORT_MODE(CPU_PORT));
990
991 /* Configure and enable the CPU port */
992 lan_rmw(ANA_PGID_PGID_SET(0),
993 ANA_PGID_PGID,
994 lan966x, ANA_PGID(CPU_PORT));
995 lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT)),
996 ANA_PGID_PGID,
997 lan966x, ANA_PGID(PGID_CPU));
998
999 /* Multicast to all other ports */
1000 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
1001 ANA_PGID_PGID,
1002 lan966x, ANA_PGID(PGID_MC));
1003
1004 /* This will be controlled by mrouter ports */
1005 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
1006 ANA_PGID_PGID,
1007 lan966x, ANA_PGID(PGID_MCIPV4));
1008
1009 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
1010 ANA_PGID_PGID,
1011 lan966x, ANA_PGID(PGID_MCIPV6));
1012
1013 /* Unicast to all other ports */
1014 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
1015 ANA_PGID_PGID,
1016 lan966x, ANA_PGID(PGID_UC));
1017
1018 /* Broadcast to the CPU port and to other ports */
1019 lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT) | GENMASK(lan966x->num_phys_ports - 1, 0)),
1020 ANA_PGID_PGID,
1021 lan966x, ANA_PGID(PGID_BC));
1022
1023 lan_wr(REW_PORT_CFG_NO_REWRITE_SET(1),
1024 lan966x, REW_PORT_CFG(CPU_PORT));
1025
1026 lan_rmw(ANA_ANAINTR_INTR_ENA_SET(1),
1027 ANA_ANAINTR_INTR_ENA,
1028 lan966x, ANA_ANAINTR);
1029
1030 spin_lock_init(&lan966x->tx_lock);
1031
1032 lan966x_taprio_init(lan966x);
1033 }
1034
lan966x_ram_init(struct lan966x * lan966x)1035 static int lan966x_ram_init(struct lan966x *lan966x)
1036 {
1037 return lan_rd(lan966x, SYS_RAM_INIT);
1038 }
1039
lan966x_reset_switch(struct lan966x * lan966x)1040 static int lan966x_reset_switch(struct lan966x *lan966x)
1041 {
1042 struct reset_control *switch_reset;
1043 int val = 0;
1044 int ret;
1045
1046 switch_reset = devm_reset_control_get_optional_shared(lan966x->dev,
1047 "switch");
1048 if (IS_ERR(switch_reset))
1049 return dev_err_probe(lan966x->dev, PTR_ERR(switch_reset),
1050 "Could not obtain switch reset");
1051
1052 reset_control_reset(switch_reset);
1053
1054 /* Don't reinitialize the switch core, if it is already initialized. In
1055 * case it is initialized twice, some pointers inside the queue system
1056 * in HW will get corrupted and then after a while the queue system gets
1057 * full and no traffic is passing through the switch. The issue is seen
1058 * when loading and unloading the driver and sending traffic through the
1059 * switch.
1060 */
1061 if (lan_rd(lan966x, SYS_RESET_CFG) & SYS_RESET_CFG_CORE_ENA)
1062 return 0;
1063
1064 lan_wr(SYS_RESET_CFG_CORE_ENA_SET(0), lan966x, SYS_RESET_CFG);
1065 lan_wr(SYS_RAM_INIT_RAM_INIT_SET(1), lan966x, SYS_RAM_INIT);
1066 ret = readx_poll_timeout(lan966x_ram_init, lan966x,
1067 val, (val & BIT(1)) == 0, READL_SLEEP_US,
1068 READL_TIMEOUT_US);
1069 if (ret)
1070 return ret;
1071
1072 lan_wr(SYS_RESET_CFG_CORE_ENA_SET(1), lan966x, SYS_RESET_CFG);
1073
1074 return 0;
1075 }
1076
lan966x_probe(struct platform_device * pdev)1077 static int lan966x_probe(struct platform_device *pdev)
1078 {
1079 struct fwnode_handle *ports, *portnp;
1080 struct lan966x *lan966x;
1081 u8 mac_addr[ETH_ALEN];
1082 int err;
1083
1084 lan966x = devm_kzalloc(&pdev->dev, sizeof(*lan966x), GFP_KERNEL);
1085 if (!lan966x)
1086 return -ENOMEM;
1087
1088 platform_set_drvdata(pdev, lan966x);
1089 lan966x->dev = &pdev->dev;
1090
1091 if (!device_get_mac_address(&pdev->dev, mac_addr)) {
1092 ether_addr_copy(lan966x->base_mac, mac_addr);
1093 } else {
1094 pr_info("MAC addr was not set, use random MAC\n");
1095 eth_random_addr(lan966x->base_mac);
1096 lan966x->base_mac[5] &= 0xf0;
1097 }
1098
1099 err = lan966x_create_targets(pdev, lan966x);
1100 if (err)
1101 return dev_err_probe(&pdev->dev, err,
1102 "Failed to create targets");
1103
1104 err = lan966x_reset_switch(lan966x);
1105 if (err)
1106 return dev_err_probe(&pdev->dev, err, "Reset failed");
1107
1108 lan966x->num_phys_ports = NUM_PHYS_PORTS;
1109 lan966x->ports = devm_kcalloc(&pdev->dev, lan966x->num_phys_ports,
1110 sizeof(struct lan966x_port *),
1111 GFP_KERNEL);
1112 if (!lan966x->ports)
1113 return -ENOMEM;
1114
1115 /* There QS system has 32KB of memory */
1116 lan966x->shared_queue_sz = LAN966X_BUFFER_MEMORY;
1117
1118 /* set irq */
1119 lan966x->xtr_irq = platform_get_irq_byname(pdev, "xtr");
1120 if (lan966x->xtr_irq < 0)
1121 return lan966x->xtr_irq;
1122
1123 err = devm_request_threaded_irq(&pdev->dev, lan966x->xtr_irq, NULL,
1124 lan966x_xtr_irq_handler, IRQF_ONESHOT,
1125 "frame extraction", lan966x);
1126 if (err) {
1127 pr_err("Unable to use xtr irq");
1128 return -ENODEV;
1129 }
1130
1131 lan966x->ana_irq = platform_get_irq_byname(pdev, "ana");
1132 if (lan966x->ana_irq > 0) {
1133 err = devm_request_threaded_irq(&pdev->dev, lan966x->ana_irq, NULL,
1134 lan966x_ana_irq_handler, IRQF_ONESHOT,
1135 "ana irq", lan966x);
1136 if (err)
1137 return dev_err_probe(&pdev->dev, err, "Unable to use ana irq");
1138 }
1139
1140 lan966x->ptp_irq = platform_get_irq_byname(pdev, "ptp");
1141 if (lan966x->ptp_irq > 0) {
1142 err = devm_request_threaded_irq(&pdev->dev, lan966x->ptp_irq, NULL,
1143 lan966x_ptp_irq_handler, IRQF_ONESHOT,
1144 "ptp irq", lan966x);
1145 if (err)
1146 return dev_err_probe(&pdev->dev, err, "Unable to use ptp irq");
1147
1148 lan966x->ptp = 1;
1149 }
1150
1151 lan966x->fdma_irq = platform_get_irq_byname(pdev, "fdma");
1152 if (lan966x->fdma_irq > 0) {
1153 err = devm_request_irq(&pdev->dev, lan966x->fdma_irq,
1154 lan966x_fdma_irq_handler, 0,
1155 "fdma irq", lan966x);
1156 if (err)
1157 return dev_err_probe(&pdev->dev, err, "Unable to use fdma irq");
1158
1159 lan966x->fdma = true;
1160 }
1161
1162 if (lan966x->ptp) {
1163 lan966x->ptp_ext_irq = platform_get_irq_byname(pdev, "ptp-ext");
1164 if (lan966x->ptp_ext_irq > 0) {
1165 err = devm_request_threaded_irq(&pdev->dev,
1166 lan966x->ptp_ext_irq, NULL,
1167 lan966x_ptp_ext_irq_handler,
1168 IRQF_ONESHOT,
1169 "ptp-ext irq", lan966x);
1170 if (err)
1171 return dev_err_probe(&pdev->dev, err,
1172 "Unable to use ptp-ext irq");
1173 }
1174 }
1175
1176 ports = device_get_named_child_node(&pdev->dev, "ethernet-ports");
1177 if (!ports)
1178 return dev_err_probe(&pdev->dev, -ENODEV,
1179 "no ethernet-ports child found\n");
1180
1181 lan966x->debugfs_root = debugfs_create_dir("lan966x", NULL);
1182
1183 /* init switch */
1184 lan966x_init(lan966x);
1185 lan966x_stats_init(lan966x);
1186
1187 /* go over the child nodes */
1188 fwnode_for_each_available_child_node(ports, portnp) {
1189 phy_interface_t phy_mode;
1190 struct phy *serdes;
1191 u32 p;
1192
1193 if (fwnode_property_read_u32(portnp, "reg", &p))
1194 continue;
1195
1196 phy_mode = fwnode_get_phy_mode(portnp);
1197 err = lan966x_probe_port(lan966x, p, phy_mode, portnp);
1198 if (err)
1199 goto cleanup_ports;
1200
1201 /* Read needed configuration */
1202 lan966x->ports[p]->config.portmode = phy_mode;
1203 lan966x->ports[p]->fwnode = fwnode_handle_get(portnp);
1204
1205 serdes = devm_of_phy_optional_get(lan966x->dev,
1206 to_of_node(portnp), NULL);
1207 if (IS_ERR(serdes)) {
1208 err = PTR_ERR(serdes);
1209 goto cleanup_ports;
1210 }
1211 lan966x->ports[p]->serdes = serdes;
1212
1213 lan966x_port_init(lan966x->ports[p]);
1214 err = lan966x_xdp_port_init(lan966x->ports[p]);
1215 if (err)
1216 goto cleanup_ports;
1217 }
1218
1219 fwnode_handle_put(ports);
1220
1221 lan966x_mdb_init(lan966x);
1222 err = lan966x_fdb_init(lan966x);
1223 if (err)
1224 goto cleanup_ports;
1225
1226 err = lan966x_ptp_init(lan966x);
1227 if (err)
1228 goto cleanup_fdb;
1229
1230 err = lan966x_fdma_init(lan966x);
1231 if (err)
1232 goto cleanup_ptp;
1233
1234 err = lan966x_vcap_init(lan966x);
1235 if (err)
1236 goto cleanup_fdma;
1237
1238 lan966x_dcb_init(lan966x);
1239
1240 return 0;
1241
1242 cleanup_fdma:
1243 lan966x_fdma_deinit(lan966x);
1244
1245 cleanup_ptp:
1246 lan966x_ptp_deinit(lan966x);
1247
1248 cleanup_fdb:
1249 lan966x_fdb_deinit(lan966x);
1250
1251 cleanup_ports:
1252 fwnode_handle_put(ports);
1253 fwnode_handle_put(portnp);
1254
1255 lan966x_cleanup_ports(lan966x);
1256
1257 cancel_delayed_work_sync(&lan966x->stats_work);
1258 destroy_workqueue(lan966x->stats_queue);
1259 mutex_destroy(&lan966x->stats_lock);
1260
1261 debugfs_remove_recursive(lan966x->debugfs_root);
1262
1263 return err;
1264 }
1265
lan966x_remove(struct platform_device * pdev)1266 static int lan966x_remove(struct platform_device *pdev)
1267 {
1268 struct lan966x *lan966x = platform_get_drvdata(pdev);
1269
1270 lan966x_taprio_deinit(lan966x);
1271 lan966x_vcap_deinit(lan966x);
1272 lan966x_fdma_deinit(lan966x);
1273 lan966x_cleanup_ports(lan966x);
1274
1275 cancel_delayed_work_sync(&lan966x->stats_work);
1276 destroy_workqueue(lan966x->stats_queue);
1277 mutex_destroy(&lan966x->stats_lock);
1278
1279 lan966x_mac_purge_entries(lan966x);
1280 lan966x_mdb_deinit(lan966x);
1281 lan966x_fdb_deinit(lan966x);
1282 lan966x_ptp_deinit(lan966x);
1283
1284 debugfs_remove_recursive(lan966x->debugfs_root);
1285
1286 return 0;
1287 }
1288
1289 static struct platform_driver lan966x_driver = {
1290 .probe = lan966x_probe,
1291 .remove = lan966x_remove,
1292 .driver = {
1293 .name = "lan966x-switch",
1294 .of_match_table = lan966x_match,
1295 },
1296 };
1297
lan966x_switch_driver_init(void)1298 static int __init lan966x_switch_driver_init(void)
1299 {
1300 int ret;
1301
1302 lan966x_register_notifier_blocks();
1303
1304 ret = platform_driver_register(&lan966x_driver);
1305 if (ret)
1306 goto err;
1307
1308 return 0;
1309
1310 err:
1311 lan966x_unregister_notifier_blocks();
1312 return ret;
1313 }
1314
lan966x_switch_driver_exit(void)1315 static void __exit lan966x_switch_driver_exit(void)
1316 {
1317 platform_driver_unregister(&lan966x_driver);
1318 lan966x_unregister_notifier_blocks();
1319 }
1320
1321 module_init(lan966x_switch_driver_init);
1322 module_exit(lan966x_switch_driver_exit);
1323
1324 MODULE_DESCRIPTION("Microchip LAN966X switch driver");
1325 MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>");
1326 MODULE_LICENSE("Dual MIT/GPL");
1327